Re: Brief Comments on the 200-600 with A7R4 (Harlequin Duck)
In my view, one should first test the lens mounted on a sturdy tripod (I mean really sturdy; holding a 600mm steady is no joke) and on a static subject to see if the variation in focus between individual shots is still present when the subject and camera are not moving at all. From that one can then proceed to testing with living subject with lens still on tripod, and try to figure out where the problem is. I think it's clear that in a supertele in this price class, there will be some compromises. I suspect in a hand-held operation, the position of the subject in the frame will vary quite a bit from moment to moment, and if the lens doesn't focus instantly, just the camera shake alone is likely to introduce some focus variation from shot to shot.
61 MP is a ridiculously high resolution to expect to be perfect at the pixel level when hand-holding a 600 mm lens.
Jan 13, 2020 at 09:16 AM
Previous versions of ilkka_nissila's message #15108919 « Brief Comments on the 200-600 with A7R4 (Harlequin Duck) »
